CN116723428B - Near-bit guiding system and screw drilling tool - Google Patents
Near-bit guiding system and screw drilling tool Download PDFInfo
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- CN116723428B CN116723428B CN202310995008.5A CN202310995008A CN116723428B CN 116723428 B CN116723428 B CN 116723428B CN 202310995008 A CN202310995008 A CN 202310995008A CN 116723428 B CN116723428 B CN 116723428B
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- 238000005553 drilling Methods 0.000 title claims abstract description 64
- 210000002445 nipple Anatomy 0.000 claims abstract description 79
- 238000005259 measurement Methods 0.000 claims abstract description 62
- 230000005540 biological transmission Effects 0.000 claims abstract description 55
- 238000004891 communication Methods 0.000 claims abstract description 4
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- 230000001012 protector Effects 0.000 claims description 14
- 230000000750 progressive effect Effects 0.000 claims description 4
- 230000008054 signal transmission Effects 0.000 abstract description 4
- 239000003208 petroleum Substances 0.000 abstract description 3
- 238000007789 sealing Methods 0.000 description 20
- 239000004020 conductor Substances 0.000 description 8
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- WYTGDNHDOZPMIW-RCBQFDQVSA-N alstonine Natural products C1=CC2=C3C=CC=CC3=NC2=C2N1C[C@H]1[C@H](C)OC=C(C(=O)OC)[C@H]1C2 WYTGDNHDOZPMIW-RCBQFDQVSA-N 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/02—Contact members
- H01R13/04—Pins or blades for co-operation with sockets
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/12—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/04—Directional drilling
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
- H02G3/02—Details
- H02G3/04—Protective tubing or conduits, e.g. cable ladders or cable troughs
- H02G3/0437—Channels
- H02G3/045—Channels provided with perforations or slots permitting introduction or exit of wires
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/02—Details
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q9/00—Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q2209/00—Arrangements in telecontrol or telemetry systems
- H04Q2209/30—Arrangements in telecontrol or telemetry systems using a wired architecture
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q2209/00—Arrangements in telecontrol or telemetry systems
- H04Q2209/80—Arrangements in the sub-station, i.e. sensing device
- H04Q2209/84—Measuring functions
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
- Y02A90/30—Assessment of water resources
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Environmental & Geological Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geophysics (AREA)
- Remote Sensing (AREA)
- Signal Processing (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
The application relates to the technical field of petroleum exploration, in particular to a near-bit guiding system and a screw drilling tool, wherein the near-bit guiding system comprises: the measurement while drilling assembly is in communication connection with the remote equipment; the wire assembly is connected to the far end of the measurement while drilling assembly, and a first wiring groove is formed in the wire assembly; the transmitting nipple assembly is connected to the far end of the electric wire assembly; the transmitting short section assembly comprises a transmitting short section body and a measuring module arranged in the transmitting short section body, a second wiring groove and a third wiring groove are arranged on the transmitting short section assembly, the second wiring groove is arranged in a surrounding mode on the circumference of the transmitting short section assembly, at least part of the measuring module is communicated with the second wiring groove, the third wiring groove extends along the axial direction of the transmitting short section assembly, and the third wiring groove is communicated with the second wiring groove and the first wiring groove; and a transmission wire electrically connected between the measurement module and the measurement while drilling assembly. The technical scheme of the application effectively solves the technical problems of unstable signal transmission and complex overall structure of the traditional near-bit guiding system.
Description
Technical Field
The application relates to the technical field of petroleum exploration, in particular to a near-bit guiding system and a screw drilling tool.
Background
In the drilling process of petroleum geological exploration and the like, the drilling track is required to be accurately carried out according to engineering design requirements so as to timely and accurately master stratum information to identify a thin oil layer and improve the drilling efficiency. This is required to ensure accuracy of formation parameters near the drill bit.
In the related art, the near-bit guiding system adopts a split design, namely, a transmitting pup joint is designed at the bit, and data at the near-bit is transmitted to the receiving system in a wireless transmission mode. However, the signal transmitted by the wireless transmission mode is unstable, is easily interfered by a stratum in a special stratum such as a coal gas layer, and has the condition of data loss; in addition, in the wireless propagation mode, separate transmitting pup joint and receiving pup joint are required to be equipped, so that the whole near-bit guiding system is complex in structure and high in cost.
Disclosure of Invention
The application provides a near-bit guiding system and a screw drilling tool, which are used for solving the technical problems of unstable signal transmission, complex overall structure and high cost of the traditional near-bit guiding system.
To this end, in a first aspect, embodiments of the present application provide a near-bit steering system comprising:
the measurement while drilling assembly is in communication connection with the remote equipment;
the wire assembly is connected to the distal end of the measurement while drilling assembly, a first wiring groove is formed in the wire assembly, and the first wiring groove extends along the axial direction and the radial direction of the wire assembly at the same time;
the transmitting nipple assembly is connected to the far end of the electric wire assembly; the transmitting short section assembly comprises a transmitting short section body and a measuring module arranged in the transmitting short section body, a second wiring groove and a third wiring groove are arranged on the transmitting short section assembly, the second wiring groove is arranged in a surrounding mode on the circumference of the transmitting short section assembly, at least part of the measuring module is communicated with the second wiring groove, the third wiring groove extends along the axial direction of the transmitting short section assembly, and the third wiring groove is communicated with the second wiring groove and the first wiring groove; and
and one end of the transmission wire is electrically connected with the measurement module, and the other end of the transmission wire sequentially passes through the second wiring groove, the third wiring groove and the first wiring groove and is electrically connected with the measurement while drilling assembly.
In one possible implementation manner, the transmitting nipple body comprises a nipple shell and a first protection piece, the nipple shell is provided with a first groove body, the first protection piece covers the first groove body to form a first accommodating cavity between the first protection piece and the nipple shell, and the measuring module is arranged in the first accommodating cavity; the second wiring groove is communicated with the first groove body.
In one possible embodiment, the firing nipple body further comprises a first seal disposed between the first guard and the nipple housing.
In one possible implementation mode, a second groove body is arranged on the short joint shell, the second groove body and the first groove body are arranged at intervals along the axial direction of the launching short joint assembly, the launching short joint assembly further comprises a first contact pin assembly, the first contact pin assembly comprises a first contact pin, a second protection piece and a second sealing piece, the second protection piece covers the second groove body, and the second sealing piece is arranged between the second protection piece and the short joint shell so as to form a second accommodating cavity between the second protection piece and the short joint shell; one end of the first contact pin is inserted into the third wiring groove, and the other end of the first contact pin is positioned in the second accommodating cavity.
In one possible embodiment, the first groove body is provided with a plurality of first protection pieces, the measuring module is provided with a plurality of first protection pieces, one first protection piece is arranged corresponding to one first groove body, and one measuring module is arranged corresponding to one first accommodating cavity.
In one possible implementation, the wire assembly comprises a screw joint, a conversion flow guiding sleeve and a central connecting rod which are sequentially connected, wherein the screw joint is sleeved outside the conversion flow guiding sleeve, one end of the central connecting rod is inserted into the screw joint and connected to the outer side of the conversion flow guiding sleeve, and the other end of the central connecting rod is inserted into the measurement while drilling assembly; the first wire groove comprises a first wire section arranged on the screw joint, a second wire section arranged on the conversion guide sleeve and a third wire section arranged on the central connecting rod, wherein the first wire section, the second wire section and the third wire section are sequentially communicated, and the first wire section, the second wire section and the third wire section are sequentially arranged from outside to inside along the radial direction of the wire assembly.
In one possible implementation manner, the second wire segment includes a first wire channel, a second wire channel and a third wire channel which are sequentially communicated, one end, far away from the second wire channel, of the first wire channel is of a flaring structure, the first wire channel and the third wire channel are parallel, and the second wire channel is obliquely arranged.
In one possible implementation manner, the screw joint is provided with a third groove body, the wire assembly further comprises a second contact pin assembly, the second contact pin assembly comprises a second contact pin, a third protection piece and a third sealing piece, the third protection piece covers the third groove body, and the third sealing piece is arranged between the third protection piece and the screw joint so as to form a third accommodating chamber between the third protection piece and the screw joint; one end of the second contact pin is inserted into the first wire segment, and the other end of the second contact pin is positioned in the third accommodating cavity.
In one possible implementation, the near-bit guiding system further comprises a driving assembly, wherein the driving assembly is arranged between the transmitting pup joint assembly and the electric wire assembly, and a fourth wiring groove is arranged on the driving assembly and extends along the axial direction of the driving assembly; the transmission wire sequentially passes through the second wiring groove, the third wiring groove, the fourth wiring groove and the first wiring groove and is electrically connected with the measurement while drilling assembly.
In one possible embodiment, the near-bit guide system further comprises a collar member, wherein a fifth wiring slot is provided on the collar member, and the collar member is provided between the drive assembly and the firing nipple assembly, and between the drive assembly and the wire assembly.
In a second aspect, the present application also provides a progressive cavity drilling tool comprising a near-bit steering system as described above.
According to the embodiment of the application, the near-bit guiding system and the screw drilling tool comprise: the measurement while drilling assembly is in communication connection with the remote equipment; the wire assembly is connected to the distal end of the measurement while drilling assembly, a first wiring groove is formed in the wire assembly, and the first wiring groove extends along the axial direction and the radial direction of the wire assembly at the same time; the transmitting nipple assembly is connected to the far end of the electric wire assembly; the transmitting short section assembly comprises a transmitting short section body and a measuring module arranged in the transmitting short section body, a second wiring groove and a third wiring groove are arranged on the transmitting short section assembly, the second wiring groove is arranged in a surrounding mode on the circumference of the transmitting short section assembly, at least part of the measuring module is communicated with the second wiring groove, the third wiring groove extends along the axial direction of the transmitting short section assembly, and the third wiring groove is communicated with the second wiring groove and the first wiring groove; and one end of the transmission wire is electrically connected with the measurement module, and the other end of the transmission wire sequentially passes through the second wiring groove, the third wiring groove and the first wiring groove and is electrically connected with the measurement while drilling assembly. According to the technical scheme, the specific configuration of the near-bit guiding system is optimized, so that the wired transmission of the near-bit guiding system is realized, the stability and accuracy of data information transmission collected at the near-bit position are improved, and the situation that the data information is lost due to the interference of stratum environment in data information transmission is avoided, so that information loss is caused; meanwhile, the traditional near-bit guiding system is avoided in a wired transmission mode, and the transmitting nipple and the receiving nipple are required to be configured at the same time, so that information at the near-bit is collected and transmitted, the structure of the near-bit guiding system is greatly simplified, subsequent transportation and assembly are facilitated, and the cost of the near-bit guiding system is reduced. Specifically, the near-bit steering system is configured to include at least a combination of a measurement while drilling assembly, a wire assembly, a firing nipple assembly, and a transmission conductor. The measurement while drilling assembly is communicatively coupled to the remote device to communicate the detection data acquired near the drill bit to the remote device. The wire assembly is used for providing a first wiring groove for the transmission wire so as to hide the transmission wire inside the wire assembly and avoid erosion/damage of the transmission wire by an external drilling environment. The transmitting nipple assembly is configured to at least comprise a transmitting nipple body and a combined component of a measuring module, wherein the measuring module is configured inside the transmitting nipple body and is used for collecting data information at a position close to a drill bit; the transmitting nipple body is used for providing a second wiring groove and a third wiring groove for the transmission wires so as to hide the transmission wires inside the transmitting nipple assembly and avoid the corrosion/damage of the external drilling environment to the transmission wires. So, the one end electricity of transmission wire is connected on measuring module, and the other end passes second wiring groove, third wiring groove and first wiring groove in order to the electricity is connected on measuring while drilling subassembly, in order to with the data information who gathers on the measuring module for measuring while drilling subassembly, the rethread is along with measuring subassembly with this data information transfer for remote equipment, realizes gathering the transmission of information.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and together with the description, serve to explain the principles of the application. In order to more clearly illustrate the embodiments of the application or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, and it will be obvious to a person skilled in the art that other drawings can be obtained from these drawings without inventive effort. One or more embodiments are illustrated by way of example and not limitation in the figures of the accompanying drawings, in which like references indicate similar elements, and in which the figures of the drawings are not to be taken in a limiting sense, unless otherwise indicated.
FIG. 1 is a schematic diagram of a near-bit steering system according to an embodiment of the present application;
FIG. 2 is an axial cross-sectional view of a firing nipple assembly provided by an embodiment of the present application;
FIG. 3 is a radial cross-sectional view of a firing nipple assembly provided by an embodiment of the present application;
FIG. 4 is a schematic diagram of a measurement while drilling assembly according to an embodiment of the present application;
FIG. 5 is an axial cross-sectional view of a wire assembly provided in accordance with an embodiment of the present application;
fig. 6 is a schematic perspective view of a clip member according to an embodiment of the present application;
fig. 7 is a perspective view of a clip member provided in accordance with an embodiment of the present application.
Reference numerals illustrate:
100. a measurement while drilling assembly; 110. a non-magnetic drill collar; 120. a pulse generator; 130. a probe tube; 140. a first battery cartridge; 150. a second battery can; 160. a centralizer;
200. a wire assembly; 201. a first wiring groove; 2011. a first line segment; 2012. a second line segment; 21. a first routing channel; 22. a second wiring channel; 23. a third wiring channel; 2013. a third line segment; 202. a third tank; 210. a screw joint; 220. a conversion flow guiding sleeve; 230. a center connecting rod; 240. a second pin assembly; 241. a second pin; 242. a third protector;
300. a transmitting nipple assembly; 301. a second wiring groove; 302. a third wiring groove; 303. a first tank body; 304. a second tank body; 310. a firing nipple body; 311. a nipple housing; 312. a first protection member; 313. a first seal; 320. a measurement module; 330. a first pin assembly; 331. a first pin; 332. a second protector;
400. a transmission wire;
500. a drive assembly;
600. a clip member; 601. a notch; 610. an annular body; 620. a first arcuate boss; 630. and a second arc-shaped boss.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
The following disclosure provides many different embodiments, or examples, for implementing different structures of the application. In order to simplify the present disclosure, components and arrangements of specific examples are described below. They are, of course, merely examples and are not intended to limit the application. Furthermore, the present application may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, the present application provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the applicability of other processes and/or the use of other materials.
For ease of description, spatially relative terms, such as "inner," "outer," "lower," "upper," "above," "front," "rear," and the like, may be used herein to describe one element's or feature's relative positional relationship or movement to another element's or feature as illustrated in the figures. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figure experiences a position flip or a change in attitude or a change in state of motion, then the indications of these directivities correspondingly change, for example: an element described as "under" or "beneath" another element or feature would then be oriented "over" or "above" the other element or feature. Thus, the example term "below … …" may include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions) and the spatial relative relationship descriptors used herein interpreted accordingly.
Referring to fig. 1-7, in a first aspect, embodiments of the present application provide a near-bit steering system comprising: measurement while drilling assembly 100, wire assembly 200, firing nipple assembly 300, and transmission conductor 400.
Measurement while drilling assembly 100, communicatively coupled to a remote device;
a wire assembly 200 connected to the distal end of the measurement while drilling assembly 100, the wire assembly 200 having a first wire slot 201 thereon, the first wire slot 201 extending both axially and radially of the wire assembly 200;
a firing nipple assembly 300 connected to the distal end of the wire assembly 200; the transmitting nipple assembly 300 comprises a transmitting nipple body 310 and a measuring module 320 arranged in the transmitting nipple body 310, a second wiring groove 301 and a third wiring groove 302 are arranged on the transmitting nipple assembly 300, the second wiring groove 301 is annularly arranged in the circumferential direction of the transmitting nipple assembly 300, at least part of the measuring module 320 is communicated with the second wiring groove 301, the third wiring groove 302 extends along the axial direction of the transmitting nipple assembly 300, and the third wiring groove 302 is communicated with the second wiring groove 301 and the first wiring groove 201; and
the transmission wire 400 has one end electrically connected to the measurement module 320, and the other end electrically connected to the measurement while drilling assembly 100 through the second wiring groove 301, the third wiring groove 302 and the first wiring groove 201 sequentially.
In the embodiment, the specific configuration of the near-bit guiding system is optimized to realize the wired transmission of the near-bit guiding system, so that the stability and accuracy of the transmission of the data information collected at the near-bit position are improved, and the situation that the data information is lost due to the interference of stratum environment during the data information transmission is avoided, so that the information is lost; meanwhile, the traditional near-bit guiding system is avoided in a wired transmission mode, and the transmitting nipple and the receiving nipple are required to be configured at the same time, so that information at the near-bit is collected and transmitted, the structure of the near-bit guiding system is greatly simplified, subsequent transportation and assembly are facilitated, and the cost of the near-bit guiding system is reduced.
Specifically, the near-bit steering system is configured to include at least the combined components of measurement while drilling assembly 100, wire assembly 200, firing nipple assembly 300, and transmission conductor 400. The measurement while drilling assembly 100 is communicatively coupled to a remote device to communicate detection data acquired near the drill bit to the remote device. The wire assembly 200 is used to provide the first wiring channel 201 to the transmission conductor 400 to conceal the transmission conductor 400 within the wire assembly 200 from erosion/damage from the external drilling environment to the transmission conductor 400. The transmitting nipple assembly 300 is configured to at least comprise a combined component of a transmitting nipple body 310 and a measuring module 320, wherein the measuring module 320 is configured inside the transmitting nipple body 310 and is used for collecting data information at the position near a drill bit; the launching nipple body 310 is configured to provide the second wire slot 301 and the third wire slot 302 to the transmission wire 400 to conceal the transmission wire 400 inside the launching nipple assembly 300, thereby avoiding erosion/damage to the transmission wire 400 from the external drilling environment. In this way, one end of the transmission wire 400 is electrically connected to the measurement module 320, and the other end sequentially passes through the second wiring groove 301, the third wiring groove 302 and the first wiring groove 201, and is electrically connected to the measurement while drilling assembly 100, so as to transfer the data information collected on the measurement module 320 to the measurement while drilling assembly 100, and then transfer the data information to a remote device through the measurement while drilling assembly 100, thereby realizing the transfer of the collected information.
Referring to fig. 4, in an example, the measurement while drilling assembly 100 includes a non-magnetic drill collar 110, a pulse generator 120, a first battery pack, a probe 130, and a second battery pack, where the non-magnetic drill collar 110 has a cavity, and the pulse generator 120, the first battery pack, the probe 130, and the second battery pack are sequentially distributed in the cavity of the non-magnetic drill collar 110 from a proximal end to a distal end. The probe 130 is used to measure the orientation parameters of the near bit distal end (acquired by measurement module 320 in the firing sub assembly 300), such as distal well deviation, azimuth, toolface, etc.; the pulser 120 is used to transmit signals to transmit the near-bit distal directional parameters measured by the probe 130 to a remote device. The first battery pack is used to power the pulser 120 and probe 130 and the second battery pack is used to power the measurement module 320 on the firing nipple assembly 300.
Specifically, the first battery tube 140 is arranged on the outer side of the first battery pack, and the first battery tube 140 can strengthen the connection stability of the first battery pack and has compression resistance and shock absorption effects on the first battery pack; the second battery section of thick bamboo 150 is arranged to the outside of second group battery, and the connection stability of second group battery can be strengthened to second battery section of thick bamboo 150, plays resistance to compression and shock attenuation effect to the second group battery.
In one example, the distal end of the non-magnetic drill collar 110 is threadably connected to the wire assembly 200 and the proximal end of the non-magnetic drill collar 110 is threadably connected to the downhole drill rod screw.
In one example, the measurement while drilling assembly 100 further includes a plurality of centralizers 160, the centralizers 160 being disposed between the pulser 120 and the first battery pack, the first battery pack and the probe 130, and the probe 130 and the second battery pack to provide a centralizing shock absorbing effect.
Referring to fig. 1 to 3, in one possible embodiment, the transmitting nipple body 310 includes a nipple housing 311 and a first protection member 312, the nipple housing 311 is provided with a first groove 303, the first protection member 312 covers the first groove 303 to form a first accommodating chamber between the first protection member 312 and the nipple housing 311, and the measurement module 320 is disposed in the first accommodating chamber; the second wiring groove 301 communicates with the first groove 303.
In this embodiment, the specific configuration of the firing nipple body 310 is optimized. Specifically, the launching nipple body 310 is configured as a combined member at least including a nipple housing 311 and a first protection member 312, where the first groove 303 provided on the nipple housing 311 is recessed toward the center of the nipple housing 311, so that after the measurement module 320 is assembled into the first groove 303, the first protection member 312 covers the open end of the first groove 303, so as to realize the assembly of the launching nipple assembly 300. The whole assembly is simple and convenient, and the follow-up overhaul and disassembly are easy.
In an example, the first groove 303 is a slightly square groove, and the first protecting member 312 is an arc-shaped protecting cover plate. The arc-shaped protection cover plate is in smooth transition with the outer wall of the short section shell 311.
Referring to fig. 1-3, in one possible embodiment, the firing nipple body 310 further includes a first seal 313, the first seal 313 being disposed between the first guard 312 and the nipple housing 311.
In this embodiment, the specific configuration of the launching nipple body 310 is further optimized. Specifically, the launching nipple body 310 is configured as a combined component at least including a nipple housing 311, a first protection member 312 and a first sealing member 313, the first sealing member 313 is configured in a bottom groove of a connection end of the first protection member 312, and when the first protection member 312 is covered on the nipple housing 311, the first sealing member 313 abuts against the first groove 303 so as to ensure sealing performance of the first accommodating chamber. For example, but not limited to, the first seal 313 is a high pressure seal ring.
Referring to fig. 1 to 3, in one possible embodiment, the short section housing 311 is provided with a second groove 304, the second groove 304 and the first groove 303 are arranged at intervals along the axial direction of the short section assembly 300, the short section assembly 300 further includes a first pin assembly 330, the first pin assembly 330 includes a first pin 331, a second protection member 332 and a second sealing member (not shown in the drawings), the second protection member 332 covers the second groove 304, and the second sealing member is disposed between the second protection member 332 and the short section housing 311, so as to form a second accommodating chamber between the second protection member 332 and the short section housing 311; one end of the first pin 331 is inserted into the third wiring groove 302, and the other end is located in the second accommodating chamber.
In this embodiment, the specific configuration of the firing nipple assembly 300 is further optimized. Specifically, the launching nipple assembly 300 is configured to at least include a combination of a launching nipple body 310, a measurement module 320, and a first pin assembly 330, where the first pin assembly 330 is configured within the launching nipple assembly 300, and the first pin assembly 330 is located near one end of the wire assembly 200 for achieving stable connection of the transmission wire 400. In this way, the first contact pin assembly 330 is tightly connected with the short section shell 311 in a sealing manner, so that the transmission wire 400 in the third wiring groove 302 is more stable, shaking or knotting and other conditions are not easy to occur, and the signal transmission stability of the transmission wire 400 is improved.
Specifically, the first pin assembly 330 is configured as a combined member including at least a first pin 331, a second protector 332, and a second seal, the second protector 332 being a protective cover plate, the second seal being a high-pressure sealing rubber plug. When the second protection member 332 is covered in the second groove 304, the high-pressure sealing rubber plug abuts against the second groove 304, so as to ensure the sealing performance of the second chamber.
In one possible embodiment, the first slots 303 are provided with a plurality of first protection pieces 312, the measuring modules 320 are provided with a plurality of first protection pieces 312, one first protection piece 312 is provided corresponding to one first slot 303, and one measuring module 320 is provided corresponding to one first accommodating chamber.
In this embodiment, the specific configuration of the firing nipple assembly 300 is further optimized. Specifically, to improve the diversity and accuracy of the detection data, a plurality of measurement modules 320 are configured, and meanwhile, a plurality of first grooves 303 are configured on the short section housing 311, and a plurality of first protection pieces 312 are configured corresponding to the first grooves 303, so that at least one first protection piece 312 can be ensured to correspondingly cover one first groove 303 to form a first accommodating chamber, and at least one measurement module 320 is configured in each accommodating chamber.
Referring to fig. 3, in an example, the first grooves 303 are configured with four, the first protectors 312 are configured with four, the measurement modules 320 are configured with four first grooves 303 arranged at intervals along the circumferential direction of the sub housing 311. The second wire passing groove is arranged around the short section shell 311 and communicated with the four first groove bodies 303. The measurement module 320 is respectively two gamma detectors, an engineering parameter detector, a well deviation detector and a main control circuit board, the two gamma detectors are respectively configured in two first groove bodies 303 which are oppositely arranged, the engineering parameter detector and the well deviation detector are oppositely arranged, and the main control circuit board and the well deviation detector are configured in the same first accommodating cavity. One end of the first wire is electrically connected with the gamma detector, and the other end of the first wire penetrates into the second wire passing groove and is electrically connected to the main control circuit board; one end of the second wire is electrically connected with the well deviation detector, and the other end of the second wire is electrically connected with the main control circuit board; one end of the third wire is electrically connected with the lower gamma detector, and the other end of the third wire penetrates into the second wire passing groove and is electrically connected to the main control circuit board; one end of the fourth wire is electrically connected to the engineering parameter detector, and the other end of the fourth wire penetrates into the second wire passing groove and is electrically connected to the main control circuit board (the first wire, the second wire, the third wire and the fourth wire are all part of the transmission wire 400). The main control circuit board is connected with a 485 bus (a transmission wire 400 described below), and the 485 bus penetrates into the third wire passing groove and the first wire passing groove and is electrically connected to the measurement while drilling assembly 100.
The two gamma detectors, the engineering parameter detector and the well deviation detector are respectively used for acquiring gamma data, azimuth, engineering parameters and well deviation data at the position close to the drill bit; the main control circuit board stores the data acquired by the plurality of measurement modules 320 into Flash through the serial port of the singlechip, and when the 485 bus receives a command of the Measurement While Drilling (MWD) assembly 100, the main control circuit board sends the data to the pulse generator 120 of the measurement while drilling assembly 100.
Further, the two gamma detectors respectively correspond to the high side and the low side of the tool face of the screw drilling tool, so that real-time measurement of the screw drilling tool during composite drilling and directional drilling can be realized.
In one example, the measurement module 320 is coupled to the first slot 303 of the sub housing 311 via a mounting bracket. The measuring module 320 is in threaded connection with the fixing base, so that accurate detection of the measuring module 320 in the underground vibration environment is guaranteed.
Referring to fig. 1 and 5, in one possible embodiment, the wire assembly 200 includes a screw connector 210, a conversion guide sleeve 220 and a central connecting rod 230 connected in sequence, wherein the screw connector 210 is sleeved outside the conversion guide sleeve 220, one end of the central connecting rod 230 is inserted into the screw connector 210 and connected to the outer side of the conversion guide sleeve 220, and the other end is inserted into the measurement while drilling assembly 100; the first wire groove 201 includes a first wire segment 2011 disposed at the screw joint 210, a second wire segment 2012 disposed at the conversion guide sleeve 220, and a third wire segment 2013 disposed at the center connecting rod 230, the first wire segment 2011, the second wire segment 2012, and the third wire segment 2013 are sequentially communicated, and the first wire segment 2011, the second wire segment 2012, and the third wire segment 2013 are sequentially arranged from outside to inside along a radial direction of the wire assembly.
In this embodiment, the specific configuration of the wire assembly 200 is optimized. Specifically, the wire assembly 200 is configured as a composite member including at least a screw fitting 210, a transition sleeve 220, and a center connection rod 230. The screw joint 210 is provided with a fluid through hole for fluid to flow through, and the fluid through hole is internally provided with internal threads; external threads are arranged at both ends of the conversion diversion sleeve 220, and one end of the conversion diversion sleeve 220 is connected to the internal threads of the fluid through hole through the external threads; the central connecting rod 230 is provided with a hollow via hole, an inner thread is arranged on the inner wall of the central via hole, and the other end of the conversion flow guiding sleeve 220 is connected to the inner thread of the central via hole through an external thread and a thread, so that the threaded connection of the conversion flow guiding sleeve 220, the screw joint 210 and the central connecting rod 230 is realized, and the connection stability of the wire assembly 200 in the axial direction is improved.
In addition, the guide sleeve is further connected and fastened with the screw joint 210 and the center connection rod 230 through a screw/bolt structure and the like.
Referring to fig. 1 and 5, in one possible embodiment, the second trace segment 2012 includes a first trace channel 21, a second trace channel 22 and a third trace channel 23 that are sequentially communicated, one end of the first trace channel 21 far away from the second trace channel 22 is in a flared structure, the first trace channel 21 and the third trace channel 23 are parallel, and the second trace channel 22 is obliquely arranged.
In this embodiment, the specific configuration of the second trace segment 2012 is optimized. Specifically, the second wire segment 2012 is configured as a composite channel structure including at least a first wire channel 21, a second wire channel 22 and a third wire channel 23, wherein the first wire channel 21 is used for communicating with the first wire segment 2011 on the screw joint 210, and the third wire channel 23 is used for communicating with the third wire segment 2013 on the center connecting rod 230. In order to improve the alignment accuracy of the first routing channel 21 and the first routing segment 2011, the distal end of the first routing segment 2011 is designed as a flaring shape, and the flaring shape can provide a larger alignment area for the alignment of the end hole of the first routing segment 2011, so as to compensate for the situation that the first routing segment 2011 is shifted/misplaced due to processing errors or assembly errors.
Referring to fig. 1 and 5, in one possible embodiment, the screw connector 210 is provided with a third groove 202, the wire assembly 200 further includes a second pin assembly 240, the second pin assembly 240 includes a second pin 241, a third protection piece 242, and a third sealing piece, the third protection piece 242 covers the third groove 202, and the third sealing piece is disposed between the third protection piece 242 and the screw connector 210, so as to form a third accommodating chamber between the third protection piece 242 and the screw connector 210; one end of the second contact pin 241 is inserted into the first trace segment 2011, and the other end is located in the third accommodating chamber.
In this embodiment, the specific configuration of the wire assembly 200 is further optimized. Specifically, the wire assembly 200 is configured as a composite member including at least a screw connector 210, a transition sleeve 220, a central connecting rod 230, and a second pin assembly 240, the second pin assembly 240 being configured within the screw structure, and the second pin assembly 240 being located at an end near the firing nipple assembly 300 for achieving a stable connection to the transmission conductor 400. In this way, the second contact pin assembly 240 is tightly connected with the screw connector 210 in a sealing manner, so that the transmission wire 400 in the first wiring groove 201 is more stable, and shaking or knotting and other conditions are not easy to occur, thereby improving the signal transmission stability of the transmission wire 400.
Specifically, the second pin assembly 240 is configured as a combined member including at least a second pin 241, a third protector 242, and a third seal, the third protector 242 being a protective cover plate, the third seal being a high-pressure sealing rubber plug. When the third protection piece 242 is covered in the third groove 202, the high-pressure sealing rubber plug abuts against the third groove 202, so as to ensure the sealing performance of the third chamber.
Referring to fig. 1, in one possible embodiment, the near-bit guiding system further includes a driving assembly 500, where the driving assembly 500 is disposed between the launching nipple assembly 300 and the wire assembly 200, and a fourth wiring groove (not shown) is disposed on the driving assembly 500, and the fourth wiring groove extends along an axial direction of the driving assembly 500; the transmission wire 400 passes through the second wire chase 301, the third wire chase 302, the fourth wire chase, and the first wire chase 201 in sequence to electrically connect to the measurement while drilling assembly 100.
In this embodiment, the specific configuration of the near-bit steering system is further optimized. Specifically, the near-bit steering system is configured to include at least the combination of measurement while drilling assembly 100, wire assembly 200, firing sub assembly 300, transmission conductor 400, and drive assembly 500, with drive assembly 500 threadably coupled between firing sub assembly 300 and wire assembly 200 for providing drilling power to the near-bit steering system. For example, but not limited to, the drive assembly 500 is a progressive cavity drilling tool drive motor. The fourth wiring groove is a wiring channel dug on the driving assembly 500 shell, and can be in a straight line shape, or in a curve or fold line shape.
Referring to fig. 6 and 7, in one possible embodiment, the near-bit guidance system further includes a collar 600, the collar 600 having a fifth wire slot formed therein, the collar 600 being disposed between the drive assembly 500 and the firing nipple assembly 300, and between the drive assembly 500 and the wire assembly 200.
In this embodiment, the specific configuration of the near-bit steering system is further optimized. Specifically, the near-bit guiding system is configured to at least comprise a combined component of the measurement while drilling assembly 100, the wire assembly 200, the transmitting sub assembly 300, the transmission wire 400, the driving assembly 500 and the clamping piece 600, wherein the clamping piece 600 is configured at the joint of the driving assembly 500, the transmitting sub assembly 300 and the wire assembly 200, so as to improve the connection tightness of the driving assembly 500, the transmitting sub assembly 300 and the wire assembly 200, and ensure the wiring smoothness and the safety of the whole transmission wire 400. One end of the transmission wire 400 is electrically connected to the measurement module 320, and the other end sequentially passes through the second wire groove 301, the third wire groove 302, the fifth wire groove, the fourth wire groove, the fifth wire groove and the first wire groove 201, and finally is electrically connected to the measurement while drilling assembly 100.
In an example, the clip 600 includes an annular body 610, a first arc-shaped boss 620 and a second arc-shaped boss 630, the first arc-shaped boss 620 and the second arc-shaped boss 630 are spaced apart on an inner wall of the annular body 610, and the first arc-shaped boss 620 and the second arc-shaped boss 630 enclose to form a shape similar to a circle. The first and second arc bosses 620 and 630 are provided at opposite positions with notches 601, and the notches 601 penetrate through the annular body 610 in the axial direction of the clip member 600. In the axial direction of the clip member 600, the first and second arc-shaped bosses 620 and 630 are each spaced apart from the front and rear end edges of the annular body 610 by a first distance.
When the clamp 600 is sleeved between the launching nipple assembly 300 and the driving assembly 500, the first arc boss 620 and the second arc boss 630 are abutted against the outer wall of the launching nipple assembly 300, the front end and the rear end of the annular body 610 are respectively formed into annular accommodating cavities with the launching nipple assembly 300 and the driving assembly 500, the annular accommodating cavities on the front side and the rear side of the first arc boss 620 and the second arc boss 630 are communicated through two notches 601, the former annular accommodating cavity corresponds to the third wiring groove 302 on the launching nipple assembly 300, the latter annular accommodating cavity corresponds to the driving assembly 500 on the driving assembly 500, and therefore the transmission wires 400 which are received in the third wiring groove 302 of the launching nipple assembly 300 extend into the former annular accommodating cavity first and then extend into the latter annular accommodating cavity through one of the notches 601.
When the clip 600 is sleeved between the driving assembly 500 and the wire assembly 200, the first arc boss 620 and the second arc boss 630 are abutted against the outer wall of the wire assembly 200, the front end and the rear end of the annular body 610 respectively form annular accommodating cavities with the driving assembly 500 and the wire assembly 200, the annular accommodating cavities on the front side and the rear side of the first arc boss 620 and the second arc boss 630 are communicated through two notches 601, the former annular accommodating cavity corresponds to the driving assembly 500 on the driving assembly 500, and the latter annular accommodating cavity corresponds to the first wiring groove 201 on the wire assembly 200, so that the transmission wire 400 connected from the driving assembly 500 of the driving assembly 500 firstly extends into the former annular accommodating cavity and then extends into the latter annular accommodating cavity through one of the notches 601.
In an example, the trace of the transmission wire 400 in the clip 600 may be linear, or may be any of serpentine, C-shaped, or S-shaped.
In a second aspect, the present application also provides a progressive cavity drilling tool comprising a near-bit steering system as described above. The specific structure of the near-bit guiding system refers to the above embodiments, and because the screw drilling tool adopts all the technical solutions of all the embodiments, the near-bit guiding system at least has all the beneficial effects brought by the technical solutions of the embodiments, and the detailed description is omitted herein.
It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only, and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "includes," "including," and "having" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and/or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order described or illustrated, unless an order of performance is explicitly stated. It should also be appreciated that additional or alternative steps may be used.
Although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms may be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as "first," "second," and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.
The foregoing is only a specific embodiment of the application to enable those skilled in the art to understand or practice the application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. A near bit steering system, comprising:
the measurement while drilling assembly is in communication connection with the remote equipment;
the wire assembly is connected to the distal end of the measurement while drilling assembly, a first wiring groove is formed in the wire assembly, and the first wiring groove extends along the axial direction and the radial direction of the wire assembly at the same time;
the transmitting nipple assembly is connected to the far end of the wire assembly; the transmitting nipple assembly comprises a transmitting nipple body and a measuring module arranged in the transmitting nipple body, a second wiring groove and a third wiring groove are arranged on the transmitting nipple assembly, the second wiring groove is annularly arranged in the circumferential direction of the transmitting nipple assembly, at least part of the measuring module is communicated with the second wiring groove, the third wiring groove extends along the axial direction of the transmitting nipple assembly, and the third wiring groove is communicated with the second wiring groove and the first wiring groove; the transmitting short section body comprises a short section shell and a first protection piece, a first groove body is arranged on the short section shell, the first protection piece covers the first groove body to form a first accommodating cavity between the first protection piece and the short section shell, and the measuring module is arranged in the first accommodating cavity; the second wiring groove is communicated with the first groove body; and
one end of the transmission wire is electrically connected with the measurement module, and the other end of the transmission wire sequentially passes through the second wiring groove, the third wiring groove and the first wiring groove and is electrically connected with the measurement while drilling assembly;
the near-bit guiding system further comprises a driving assembly, wherein the driving assembly is arranged between the transmitting pup joint assembly and the electric wire assembly, a fourth wiring groove is formed in the driving assembly, and the fourth wiring groove extends along the axial direction of the driving assembly; the transmission wire sequentially passes through the second wiring groove, the third wiring groove, the fourth wiring groove and the first wiring groove and is electrically connected with the measurement while drilling assembly;
the near-bit guiding system further comprises a clamp piece, a fifth wiring groove is formed in the clamp piece, and the clamp piece is arranged between the driving assembly and the transmitting nipple assembly and between the driving assembly and the electric wire assembly.
2. The near bit steering system of claim 1, wherein the firing nipple body further comprises a first seal disposed between the first guard and the nipple housing.
3. The near bit steering system of claim 1, wherein the sub housing is provided with a second slot, the second slot and the first slot being axially spaced apart along the firing sub assembly, the firing sub assembly further comprising a first pin assembly comprising a first pin, a second protector and a second seal, the second protector covering the second slot, the second seal being disposed between the second protector and the sub housing to form a second receiving chamber therebetween; one end of the first contact pin is inserted into the third wiring groove, and the other end of the first contact pin is positioned in the second accommodating cavity.
4. The near-bit guidance system of claim 1, wherein the first slot is provided in plurality, the first guard is provided in plurality, the measurement module is provided in plurality, one of the first guard is disposed corresponding to one of the first slot, and one of the measurement modules is disposed corresponding to one of the first receiving chambers.
5. The near bit steering system of claim 1, wherein the wire assembly comprises a screw joint, a conversion guide sleeve and a central connecting rod connected in sequence, the screw joint is sleeved outside the conversion guide sleeve, one end of the central connecting rod is inserted into the screw joint and connected to the outer side of the conversion guide sleeve, and the other end is inserted into the measurement while drilling assembly; the first wire groove is arranged in sequence along the radial direction of the wire assembly from outside to inside, and comprises a first wire section arranged on the screw joint, a second wire section arranged on the conversion guide sleeve and a third wire section arranged on the central connecting rod.
6. The near-bit guidance system of claim 5, wherein the second wire segment comprises a first wire channel, a second wire channel, and a third wire channel that are sequentially connected, wherein one end of the first wire channel away from the second wire channel is of a flared structure, the first wire channel and the third wire channel are parallel, and the second wire channel is obliquely arranged.
7. The near bit guidance system of claim 5, wherein a third groove is provided on the screw joint, the wire assembly further comprising a second pin assembly, the second pin assembly comprising a second pin, a third protector, and a third seal, the third protector covering the third groove, the third seal being provided between the third protector and the screw joint to form a third receiving chamber between the third protector and the screw joint; one end of the second contact pin is inserted into the first wire section, and the other end of the second contact pin is positioned in the third accommodating chamber.
8. A progressive cavity drilling tool comprising a near-bit steering system as claimed in any one of claims 1 to 7.
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| CN202310995008.5A CN116723428B (en) | 2023-08-09 | 2023-08-09 | Near-bit guiding system and screw drilling tool |
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| CN202310995008.5A CN116723428B (en) | 2023-08-09 | 2023-08-09 | Near-bit guiding system and screw drilling tool |
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| CN116723428B true CN116723428B (en) | 2023-11-17 |
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| CN116723428A (en) | 2023-09-08 |
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